Oil-stove.



W. R. JEAVONS.

OIL $TOVE.

APPLICATION FILED MAY 2, 1908.

Patented Jan. 5, 1909.

4 2 0 K3 0 D Z o If D O O 0 O O o y I MM O W N 7 7 6 E I [HZ/E2712 IUNITED srrATEs PATENT oFFIoE.

' WILLIAM R. JEAvOnsoFoI nVEL-AND, onro. V

' orL-sTovE.

Specification of Letters Patent.

Patented Jan. 5, T9095 Application filed. May 2, 1908. Serial No.430,432.

s invention relates to oil stoves and more especially to that classhaving burners wherein a blue flame is produced from a wick without theprovision of perforated commingling tubes.

The general object of the invention is to improve the efficiency of suchburners. More specifically stated, the object of the invention is toprovide effective means whereby the disagreeable humming noise producedby the vibrations or fluctuations of air about the flame may be avoided.

Generally speaking, the invention may be defined as consisting of thecombinations of elements embodied in the claims hereto annexed andillustrated in the drawings forming a part hereof, wherein a Figure 1represents a vertical sectional view taken through a burner constructedin accordance with my invention, a portion of the supply pipe and theair distributor looking means belng shown in elevation; Fig. 2represents a view, partly in section and partly in elevation, of amodification of the invention shown in Fig. 1; and Fig. 3 represents asectional detail on the line 3--3 of Fig. 1. r

.n my Patent No. 848,828, issued April 3nd, 1907, I have disclosed onemeans for preventing the disagreeable humming noise which is liable tooccur in blue flame burners of thetype wherein the blue flame isproduced fronra wick without'the employment of perforated comminglingtubes- The con'- struction disclosed in said patent effectively preventsthe humming noise referred to, under certain conditions. Under adverseconditions of wick and air supply, however, the construction shown inthe patent will not always prevent the disagreeable noise re ferred to.the upper portion'of the collar to form a shield, the air stratum whichis supplied between the collar and the outer-wick tube is caused to flowevenly and steadily alongside of the outer portion'of the flame and holdthe I have found that, by extending,

flame smoothly yet rigidly inv constant shape, so that extremely adverseconditions, such as the unequal air currents or the formation of strongair eddies within the outer drum or chimney will not affectthe-smoothness of this air stratum and thus the vibrationsinthe flamereferred to which are the cause-of the disagreeable humming noise arepre= vented.

With the type of burner illustrated herein, the full operative height ofthe wick is-sube stantially midway between the plane of the top of theouter wicktube and the lane of the lower outer edge of the sprea erpthenormal excursion of the wick is from below this midway osition to aboutsuch midway position. I iave found that. by constructing the collarwhich surrounds the outer wick tube in such manner that it is providedwith a relatively narrow or restricted portion about midway between thetop of the wick tube and the bottom of the outer edge of the spreaderand by providing such collar with a relatively smooth throat or interiortherebelow and by providing the collar with: an outwardly flaringportionabove such restricted portion, I amable to overcome the objectionablenoise referred to. This construction delivers the air in a smooth, stroneven current through the throat of the col lar-and' alongside of theflame above the- 'throat, without the production of air eddies,

which would destroy the smoothness of such flow. The lack of rigidityand smoothness of such air flow would contribute to the conditions whichproduce the objectionable humming noise of the flame.

To obtain the best results, the contour of the flared portion of thecollar above the restricted portion or throat should be such as tomaintain between itself and the flame an air passage of substantiallyconstant width, as such construction better avoids the formation ofeddies in the air stratum above the restrict ed portion of the collar.Furthermore, by extending the collar above the restricted portionthereof nearly to the full operative ieight of the flame, the bodyportion of the flame is protected from eddies and an other airdisturbances that may exist Wit IiILtllB drum. The restricted orthroatportion of the collar must not be so high as to prevent a slightoutward drift or flattening of the flame by the air which is dischargedunder the spreader from the interior of the wick tube. This air currentfrom under the spreader tends in a more or less degree to direct theflame outwardly oyer the air current rising through the collar and. thisoutward drift or direction of the burning vapors more surely msures theproduction of a blue flame. The best results are produced by extendingthe top of the collar to a point somewhat above the lower edge of thespreader, as this .10 shields nearly all of the body portion of amaximum flame from eddies and other air disturbances within the drum.

Describing the parts by reference numerals, 1 denotes the outer and. 52the inner wick tube of a burner. 3 denotes the wick within said tubes,said wick being provided with a carrier 4 adapted to be engaged by thestar wheel 5 on an inclined shaft 4 7' denotes the outer ring of acentering de-' vice'for the s reader, and 8 inwardly projccting armshaving at their inner ends a rin 19 for the spindle 10 which carries theair dei ector. This air deflector comprises a frusto-conical perforatedring 11 secured at its upper end to the spreader 12, as by means of asuitable number of eyelets The ring 11 and spreader 12 are secured tothe upper end of spindle 10.

14 denotes an upwardly projecting ring which is secured at its lowerend. to the vertical skirt 15 of ring 11. Ring 14 is of suilicientlyless external diameter than the inter nal diameter of wick tube 2 toenable it to be freely and rcmovably fitted thcrcinto and to providea'space therewith. The upper end of this ring is flared or bentinwardly, as

shown at 16, the base of the flared portionbeing formed'by a knee orbend in substantially the same plane as the uipor end of wick tube 1.The ring 1 1 will lJG provided with perforations 17 which may be locatedboth above and below said knee or bond. The inwardly flaring portion 16provides an air barrier to protcct the inside of the wick from the rapidair flow and to provide for the rapid flow of air above the wick, thetop of said barrier, being in substantially the same lane the top of thewick when the latter is raised to full operative height, namely,

, about midway between the top of the outer wick tube and the lowerouter edge of spreader 12. The outer wick tube is provided with ledge18, which may be conveniently formed by bonding the metal thereofoutwardly, which. ledge constitutes a seat for the collar 19. Thiscollar is provided with a suitable number of inwardly extendingprojections or supports 19 which are ada ted to engage 6o l6( go 18 andsupport the col or in operative relation to the burner. The lower end ofthe collar comprises an outwardly flared skirt 20 depending from thehorizontal ledge 21 which forms a support for the inwardly t5 cprvedlower end 22 of the drum or chimney sensor 23. The inwardly projectingportion 22 may be, and preferably is, provided with a numher ofperforations 24 for the admission of a measure of air to the base of thedrum outside of the collar, as this tends to ikeep the '70 drum wallscooler. The collar 19 extends upwardly from ledge 21 to a point belowthe top of the outer wick tube, whence it projects inwardly toward apoint above the top of the wick tube and thence flares outwardly, theupper edge of the collar extending somewhat above the lower ed o of theireader. The upper end of the co lar is pre 'erably formed by bendingthe same in the manner shown in Fig. 1; that is to say, so that theinner surso face of said collar projects inwardly to a plane aboutmidway between the top of the outer wick tube and the lower edge of thespreader and thence projects outwardly, the upper edge of saidcollarbeing above the lower edge of the spreader, and it is desirable that theinner surface of the collar be substantially smooth and unbroken, iarticularly from the throat or most restrictci portion 19 thereofdownwardly at least as far as the top of the outer wick tube. Byreference to Fig. 1, it will be seen that the location of the outwardlyflaring portion of the collar does not prevent the spreading of theflame 25 by the air su plied from the interior of the burner and hat arelatively smooth throat or into rior is provided for the sup ly of theair in a smooth even current to t e exterior of the flame and that thecontour of the flared portion 19 of this collar is such as to maintainbetween itself and the flamean air passage of substantially constantwidth, whereby eddies above the contracted portion'are provonted.

In Fig. 2, I have shown amodification of the collar 1.). lnthismodification, 26 denotes the body of the collar which is similar to thelower portion of collar 19 and is provided with inwardly extendingprojections 27 on gaging the ledge 18 on the outer wick tube. The body26 extends in a vertical direction from the ledge 26 to about the samedistance as the vertically projecting portion of 19, whence it is bentinwardly, as shown at 29. At the base of the inwardly bent portion 29there is provided a ledge 30 which, supports the lower inturned end 31of an outwardly flaring collar 32. The upper edge of 29, which forms thethroat portion, is in substantially the same plane as the most restricted portion 19 of the collar 19 and the upper edge of 32 occupiesthe same position with reference to the flame and the spreader as doesthe upper edge of 19. The function and mode of operation of the collarshown in Fig. 2 is the same, or substantially thc same,

as the function and mode of operation (if the collar shown in Fig. 1.

3.3 denotes thesup' ly pipe, through which oil is supplied to the urner,and 34 a hook 130.

soldered to the inner wick tube and engaging the supply pipe in the samemanner as de-. described in my Patent No. 848,828.

, 33 denotes a tubular connection projecting from the outer wick tube ata point opposite the book 34. The tube 33 projects down-' wardly at itsouter end, as shown at 35. The lower end of 35 is reduced somewhat, asshown at 35, so as to fit within the sleeve 3%. This sleeve forms partof the detachable connection between the burner and the supply pi e. .1

227 denotes a Washer of compressible and more or less plastic material,which is mounted within sleeve 36.and has a central perforationtherethrough for a nipple 38. The lower end of sleeve 36 projectsinwardly, to provide an annular flange 39. The internal diameter of thisflange is considerably greater than the external diameter of nipple 38The upper end of this nip le rejects above the washer 37 and is pre eraly provided with a ledge 40, by which it Wlll rest upon the top of thewasher. The upwardly extending end of nipple 38 is adapted to enter thebore of the tubular connection 33 to ilot the same to central positionon was or 37. Thesupply pipe may be provided with a recess 41, providinga fiatscat for the ledge, 39, and 1s rovided with an aperture,preferably threat ed, for the receptionof the threaded lower end ofnipple 38.

To secure the iarts described-to the supply pipe, l. preferably employ astrap consisting of two side members 42 and 43, which may be'connectedat their outturned lower ends 'the'nipple 38 and such end.

by means of a loop 44 applied thereto, as shown in Fig 3. 'lhrough theupper end of the strap there-extends a short bolt 45, the lower pointedend whereof engages a seat at the to) of connection A nut 46 is fittedwit in the up or portion of the strap and receives the bot 45. This nutis held against rotation by the strap whereby, on rotating the bolt, thestrap may be loosened or tightened.

As previously stated, washer 37 is of material which will be compressedby tighten ing the bolt 45. The material which I preferably employ forthis purpose is lead. On tightening up on bolt 45, this lead iscompressed and is squeezed through the annular space between flange 39and nipple 38 to the seat which supports the flange, also upwardlybetween the sleeve and the reduced lower end 35 of connection 33 andbetween This construction provides an extremely efiicient form ofconnection between the supply pipe and the burner. it is not necessaryto take any special pains to provide a smooth seat inrecess 41 for theconnection, as the lead will accommodate itself to any irregularities ofsurface. Furthermore, the manner in which the lead flows, undercompression, around the outside 'pipe 33.

and the inside ofthe reduced "lower end 35, insures a tight joint atthis place. advantage in this construction resides in the fact that itdispenses with the use of a soldered joint, enabling the pipe to betinned and lacquered before connecting theburner thereto, withoutproducing the discoloration of the tin and lacquer coating on the pipewhich would result from soldering the burner connection thereto. 1

At the end of the pi e, I use a detachable plug which embodies t 1e sameprinciples as the connection hereinbefore described. This plug comprisesa body 47 having a base from which there projects the threaded pluproper 49. i

50 denotes a washer which is of such in--' ternal diameter than theexterna diameter of 49. This sleeve is of greater length than the depthof said washer and is of slightly A great greater diameter than the endof the supply In using. my plug, the end 49 is threaded into the supplypipe and is set up firmly thereagainst. *Tl'llS compresses the washer,which. is preferably of lead, squeezing some of the material thereofthrou h the annular space between flange 52 and t 1e unthreaded'portion53 of said pin to the seat which supports the things 52 an alsosqueezing some of the washer material into the space between the outerend of the flange and the supply pipe. The construction describedprovides simple but very effective means for forming a ti ht butdetachable I closure for the end of t e supply pipe and prevents theplug from jarring out in shi' ment. To facilitate the adjustment of t eplug, the outer end thereof is provided with an aperture 54 for theapplication of a rod, or

other adjusting means thereto. The construction of the joints orconnections formed between the burner and the supply pipe and betweenthe plug 47 and the su ply pipeconstitutes the subject matter 0my'application No. 462,77 5, filed November 16th, 1908.

For the purpose of automatically locking the spreader and the associatedpartsin position by the act-of inserting t and. such parts into theupper part of the inner wick tube, theair distributor may be providedwith an automatic locking device 55 adapted to engage the arms 8, asshown,

e spreader.

not

described and claimed' in my Patent-No.

871,593, issued Nov. 19th; 1907.

Having thus described my invention, I claim:' V

1. In an oil burner, the combination of inner and outer wick tubes, 'a 5reader extending above the upper end 0 said tubes and-spaced therefrom,a vertically extending ring within and spaced from the inner wic I suchcontracted tube and forming an air barrier for the inside of the wick,and a collar surrounding the up-- per end of the outer wick tube andextending upward to the plane of the spreader, said collar beingcontracted in diameter at a point between the tops of the wick tubes andthe spreader.

\2. in an oil burner, the combination of d. outer wick tubes, a readerex- 7 eve the upper end 0 said tubes and spaced therefrom, a verticallyextending ring within and spaced from the inner wick tube and forming anair barrier for the inside of the wick, and a collar surrounding the uper end of the outer wick tube, said collar being contracted in diameterat a point between the to s of the wick tubes and the spreader and eingof larger diameter above ortion.

3. in an oil urner, the combination of inner and'outcr wick tubes, aspreader extending above the tops of said tubes, an air barrier withinthe inner tube and extending above" the top of the same, and a collarcircuinscribing the upper end of the outer wick tube and projectingupward to a oint as -hi =h as the lower ed e of the s rea e1 said collarforming a smooth unbro en passa eway about the top of the, outer wicktube or the supply of air therethrough and being of larger diameterabove the top of the plane of the air barrier. V

4t. In an oil burner, the combination of inner and outer wick tubes, aspreader extending above the tops of said tubes, an air barricr withinsaid tubes and extending above the tops of the same, and a collarcircumscribing the upper 'portionoi the outer wick tube and projectingupward to a point above the lower edge of the spreader, said collarforming a smooth, unbroken passageway about the top of the outer wicktube for the supply of air therethrough and being of larger diameterabove the plane of the top of the air barrier.

5. In an oil burner, the combination of inner and outer wick tubes, aspreader extending above the tops of said tubes and spaced therefrom, aring within the inner wick tube and projecting upwardly to a planebetween the top of the wick tubes and the bottom of tires-spreader toform an air barrier for the inscene? collar being in a lane between thetop of the outer wick tu e and the bottom of the spreader.

6. In an oil burner, the combination of inner and outer wick tubes.v aspreader extending above the tops of said tubes and spaced therefrom, aring within the inner wick tube and projecting upwardly about midwaybetween the top of the wick tubes and the bottom of the spreader to forman air barrier for the inner surface of the wick, and a collarsurrounding the upper portion of the outer wick tube and having aninwardly projecting portion with an outwardly tion therea'bove, the sumlest diameter of said collar being in a plane substantially midwaybetween the top of the outer wick tube and the bottom of the spreader.

7. In an oil burner,- the combination of innor and outer wick tubes, aspreader extending above the upperends of said tubes and spacedtherefrom, a collar surrounding the upper end of the outer wick tube andspaced therefrom, said collar having its upper end flared outwardly,such flared portion extending above the outer edge of the spreader, anda vertically extending ring within and spaced from the inner wick tubeand forming an air projecting POT".

ner and outer wick tubes, a spreader extending above the upper ends ofsaid tubes and spaced therefrom, a collar surrounding the upper end ofthe outer wick tubes and spaced therefrom, said collar having its upperend portion flared outwardly and such outwardly flaring portionextending above the outer ed e of.the spreader, and a vertically extening ring within the inner wick tube and forming an air barrier for theinside of the wick.

' in testimony whereof, I hereunto affix my signature in the resence oftwo witnesses.

W LLIAM R. JEAVONS.

Witnesses:

J. B. HULL, BRENNAN B. WEST.

